RFR: Unclutter ShenandoahHeap, take 2

[Zhengyu Gu]

Looks good.

-Zhengyu

On 09/20/2018 10:50 AM, Aleksey Shipilev wrote:
> http://cr.openjdk.java.net/~shade/shenandoah/unclutter-sh-heap-2/webrev.01/
> 
> Since recent sh/jdk merge wrecked up my patch that reorders stuff in shenandoahHeap.hpp, I prefer to
> push the parts of pending shenandoahHeap.cpp changes ahead. This would give me the opportunity to
> just copy over the "new" shenandoahHeap.hpp with reshuffling over the old one.
> 
> Testing: tier3_gc_shenandoah
> 
> Thanks,
> -Aleksey
>